JPS61123061A - 'karaoke' recorded instrument accompaniment device - Google Patents

Abstract

PURPOSE:To solve social noise problem without giving unnatural feeling, by producing only the reproduction sound of reproduction medium from the loudspeaker while both sound signal of microphone and reproduction signal is produced from headphone by the operation of the switch. CONSTITUTION:The signal issued from the microphone connected to microphone jack 1 is supplied to microphone tape mixing amplifier 10 through a switch 16. Tape reproduction signal of both accompaniment and song reproduced by signal reproduction head 5, 5 is supplied to the amplifier 10 as multiplex sound signal through the switch 16, tape mixing amplifier 8', and is produced from a speaker 14 along with the microphone signal. The tape reproduction sound is supplied to a tape mixing amplifier 8, and headphone amplifier 15, and mixed up with microphone sound signal and supplied to headphone jack 13-2. When the contact D, D of the switch 16 is connected to B, B', the microphone signal is not produced from the loudspeaker.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention mixes a reproduction signal of a reproduction medium such as a tape, record, or video disk with a microphone audio signal,
This relates to a karaoke device that amplifies the sound for listening.

BACKGROUND OF THE INVENTION In recent years, karaoke machines have become quite popular and used not only for professional use but also for home use. Conventional karaoke equipment reproduces an accompaniment signal recorded on a tape or record, sings along with it into a microphone, and amplifies the mixed signal of both to be heard through a speaker.

An example of a conventional karaoke apparatus will be described below with reference to the drawings.

For the sake of simplicity, a karaoke device that uses a general tape as a sound source will be explained. Figure 4 shows an example of the circuit diagram of a conventional karaoke device. , 5' is a singing voice signal reproduction head, 6 and 6' are preamplifiers, 7 is an audio multiplex balance volume, 8 is a tape mixing amplifier, 9 is a tape volume, 10 is a microphone/tape mixing amplifier, 11 is a main volume volume, 12 is a power amplifier, 13-1 is a headphone jack, 14 is a speaker, and 17.17', 18.18', and 21.25 are resistors.

The operation of the karaoke apparatus configured as described above will be explained below.

First, a signal from a microphone connected to a microphone jack 1 is amplified by a microphone amplifier 2, an echo is added by an echo amplifier 3, and the signal is applied to a microphone/tape mixing amplifier 10 via a microphone volume 4. On the other hand, the tape playback signals played back by the accompaniment signal playback head 5 and the singing voice signal playback head 5' are amplified by preamplifiers 6 and 6'.
The accompaniment sound and the audio reproduction sound are appropriately balanced by the resistors 17, 17', 18° 18' and the audio multiplex balance volume 7, and are amplified by the tape mixing amplifier 8 as a so-called audio multiplex signal in karaoke. ．． It is applied to the microphone/tape mixing amplifier 10 via a resistor 25. Then, together with the microphone signal, it passes through the main volume volume 11, is amplified by the power amplifier 12, and is heard from the speaker 14.

Problems to be Solved by the Invention However, with the above configuration, the sound is amplified from the spinon, so if you do not want to get a sufficient singing experience, the volume will be quite loud, causing noise problems in densely populated areas. I couldn't enjoy No J Raoke for a while.

To solve this problem, there is a way to enjoy it alone using headphone, but even though the person in question is fine, the people around him/her can only hear the raw voice coming from the person's mouth, which causes a very unnatural and unnatural sound. He also had the problem that he was hesitant to practice because of the fact that he felt it was even funny.

In view of the above-mentioned problems, the present invention provides a karaoke apparatus that does not give the above-mentioned unnatural feeling and is configured to easily solve the noise problem.

Means for Solving the Problems In order to solve the above problems, the karaoke apparatus of the present invention has the following features:
Under normal conditions, the audio signal from the microphone and the playback signal from the playback medium are mixed, amplified, and amplified through a speaker. The playback signal of the playback medium is mixed and amplified and listened to through headphones, and only the playback sound of the playback medium is amplified and amplified from the speaker.

Function The present invention has the above-described configuration, and can be used in the same way as a conventional karaoke device, and when using headphones, a changeover switch allows the headphones to output the accompaniment sound from the playback medium and the microphone used by the person singing. At the same time, it is possible to listen to only the sound from the playback medium through the speakers, so that other people do not hear only the singer's real voice, The accompaniment also comes out of the speakers, so it doesn't give an unnatural or funny feeling to the people around you, and since the person's real voice is not as loud as the voice amplified through the microphone, it doesn't sound unnatural or funny. Since there is no need to make the accompaniment sound from the speakers so loud to hide the sound, the overall sound is relatively low, and it is possible to achieve the effect of causing less nuisance to the neighbors.

EXAMPLE A karaoke apparatus using a magnetic tape according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a circuit diagram of a karaoke apparatus according to a first embodiment of the present invention. In the figure, 1 is a microphone jack, 2 is a microphone amplifier, 3 is an echo amplifier, 4 is a microphone volume, 5 is an accompaniment signal playback head, 5' is a singing voice signal playback head, 6 and 6' are a preamplifier, and 7 is a Audio multiplex balance volume, 8.8' is a tape mixing amplifier, 9 is a tape volume, 10 is a microphone/tape mixing amplifier, 11 is a main volume volume, 12 is a power amplifier, 13-2 is a headphone jack, 14 is a speaker, 15 is a headphone amplifier, 16 is a changeover switch, and 17.17', 18.18', and 21.25 are resistors.

The operation of the karaoke apparatus constructed as described above will be explained below with reference to FIG.

First, the signal from the microphone connected to the microphone jack L is amplified by the microphone amplifier 2, an echo is added by the echo amplifier 3, the microphone volume is set to 4, and the selector switch is set to 1.
The signal is applied to the microphone/tape mixing amplifier 10 via contacts A' and D' of 6. On the other hand, an accompaniment signal reproducing head 5;
The tape playback signal played back by the singing voice signal playback head 5' is amplified by a preamplifier 6.6', and then connected to a resistor 17.17.
', 18.18', the accompaniment sound and the audio playback sound are appropriately balanced by the audio multiplex balance volume 7, and are passed through the contacts A and D of the changeover switch 16 as a so-called audio multiplex signal in karaoke to the tape mixing amplifier 8. , 8' and tape volume 9. It is applied to the microphone/tape mixing amplifier 10 via a resistor 25.

Then, the main volume volume 11 along with the microphone signal.
The signal is then amplified by the power amplifier I2 and is heard from the speaker 14. At this time, the tape playback sound is applied to the headphone amplifier 15 via the tape mixing amplifier 8° resistor 19, mixed with the microphone audio signal from the microphone volume 4 and the resistor 20, and then passed through the resistor 2■ to the headphone jack 13-2. If you connect headphones here to the Nori and R terminals, you can enjoy karaoke just like you would with speakers. The above is the same usage as the conventional No.1 Laoga, but next, change the contact point of the changeover switch 16, D' to
, B".Then, the tape playback signal from the audio multiplex balance volume 7 is sent to the tape mixing amplifier 8'.
However, since the microphone signal from the microphone volume 4 is not applied to the microphone/tape mixing amplifier 10, the microphone signal cannot be amplified and heard from the speaker. In this state, headphone jack 13
If you connect headphones to the -2, you can listen to a mixture of tape playback sound and microphone amplification sound, just like before. In this state, the intended effect of the present invention is achieved. Contact of changeover switch 16.

If you connect D' to c and c', no sound will come out from Subino J, but you can still listen to it from the headphones as before. As described above, according to this embodiment, by providing the headphone amplifier 15 and the changeover switch 16, the desired effect can be achieved by appropriately switching the circuit.

A second embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a circuit diagram of a karaoke apparatus showing a second embodiment of the present invention. The difference from the first embodiment is that there is no changeover switch 16, but instead there are contacts A and B that switch in conjunction with plug insertion.

It has a headphone jack 13-3 with C.

The operation of the karaoke apparatus configured as described above will be explained below. When headphones are not connected to headphone jack 13-3, contacts A and C are closed.
The tape playback signal and the microphone signal are mixed and applied to the microphone/tape mixing amplifier 10, amplified, and heard from the speaker 14. This is similar to the conventional function shown in FIG. Next, when headphones are connected to the headphone jack 13-3, contacts A and C open, and the microphone signal from the microphone volume 4 is no longer applied to the microphone/tape mixing amplifier 10, so it cannot be heard from the subinono, but the headphone amplifier 15 Since both a tape playback signal and a microphone signal are added to the system, it is possible to enjoy so-called karaoke using headphones, while the intended purpose can be achieved by playing accompaniment from the speakers at an appropriate volume.

As described above, according to this embodiment, the headphone amplifier 15
By providing a headphone jack 13-3 with a switch contact that switches in conjunction with the insertion of a headphone plug, the desired effect can be achieved by appropriately switching the circuit.

FIG. 3 is a circuit diagram of a karaoke apparatus showing a third embodiment of the present invention. The difference from the second embodiment is that the tape mixing amplifier 8' is omitted.

The operation of the karaoke apparatus configured as described above will be explained below.

When headphones are not connected to the headphone jack 13-4, contacts A and B are closed and the microphone volume is set to 4.
The raw microphone signal is applied to the microphone/tape mixing amplifier 10 through this contact, mixed with the tape playback signal, and listened to from the spino 714. On the other hand, when a headphone is connected to the headphone shack 13-4, the contact is opened, so that the microphone signal is no longer applied to the microphone/tape mixing amplifier, and as a result, it is no longer heard from the speaker. On the other hand, since the tape reproduction signal adjusted by the audio multiplex balance volume 7 or the microphone signal is applied to the headphone amplifier 15, the user can enjoy karaoke using the headphones, but only the tape reproduction sound can be heard through the speakers. resistance 2
0 and the input side impedance of the microphone tape mixing amplifier 10 are appropriately selected to prevent the microphone signal from leaking to the speaker side.

In this example, the tape signal contains both an accompaniment signal and a singing voice signal. Although the explanation has been made based on the case where a so-called audio multiplexed tape is used, it goes without saying that this can also be applied to a karaoke apparatus that uses a tape containing only accompaniment signals.

Furthermore, although the karaoke apparatus using audio tapes has been described, the present invention can be implemented in the same manner even if records, video tapes, or video discs are used as playback media.

Effects of the Invention As described above, in the present invention, in a normal state, the audio signal of the microphone and the reproduction signal of the reproduction medium are mixed,
When the sound is amplified and amplified from the speakers, and the headphones are inserted, the operation of the changeover switch is as follows: The audio signal from the microphone and the playback signal from the playback medium are mixed, amplified, and output from the headphones. The function is that only the sound of the playback medium is amplified and amplified from the speakers, so under normal conditions it operates in the same way as conventional karaoke, and when using headphones. By using the switch, the accompaniment sound from the playback medium and the amplified sound of your own singing from the microphone are mixed through the headphones, allowing you to enjoy it as karaoke, while at the same time allowing you to hear only the sound from the playback medium through the speakers. The singer's real voice is not the only thing that is heard by others, and the accompaniment of the song comes from Subino J, so it does not make the people around you feel unnatural or funny.
Moreover, since the person's real voice is not as loud as the voice amplified through a microphone, there is no need to make the accompaniment sound from the speakers that loud to hide it, so the overall sound is relatively small. This is an extremely effective invention, as it makes it possible to realize an excellent karaoke device that does not cause much trouble to the neighbors.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a karaoke machine according to a first embodiment of the present invention, FIG. 2 is a circuit diagram of a karaoke machine according to a second embodiment, and FIG. 3 is a circuit diagram of a karaoke machine according to a third embodiment of the present invention. Circuit Diagram FIG. 4 is a circuit diagram of a conventional karaoke apparatus. 1...Mic shack, 2...Mic amplifier, 5.
...Accompaniment signal playback head, 5'...Singing voice signal playback head, 6,6'...Preamplifier, 8...Tape mixing amplifier, 10...Microphone/tape mixing amplifier, 12... Power amplifier, 13-2... Headphone jack, 14... Speaker, 15... Headphone amplifier, 16... Changeover switch.

Claims (2)

[Claims] (1) In normal conditions, the audio signal from the microphone and the reproduction signal from the reproduction medium are mixed, amplified, and amplified by the speaker, and when headphones are connected,
A karaoke machine characterized in that, by operating a changeover switch, an audio signal from a microphone and a playback signal from a playback medium are mixed and amplified and listened to through headphones, and only the playback signal from the playback medium is amplified and amplified from a speaker. Device. (2) Under normal conditions, the audio signal from the microphone and the playback signal from the playback medium are mixed, amplified, and amplified by the speaker, and when headphones are inserted into the headphone terminal, they are switched off in conjunction with the insertion of the headphones. A patent claim characterized in that an audio signal from a microphone and a playback signal from a playback medium are mixed and amplified to be heard through headphones, and only the playback signal from the playback medium is amplified and amplified from a speaker using a changeover switch. The karaoke device according to item 1.